ML20114C733
| ML20114C733 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 08/25/1992 |
| From: | Shields J COMMONWEALTH EDISON CO. |
| To: | Murley T NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 9209030159 | |
| Download: ML20114C733 (4) | |
Text
E 7[
>) Commonwcatth Edison 5
1400 opus Place e
x i
onwners Grove, ilunois r>0515 August 25,1992 Dr. Thomas E. Murley, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C.
20S55 Attn: Document Control Desk
Subject:
LaSalle County Station Units 1 and 2 In Service Testing Program Submittalof Relief Request RP 11 NRC Docket Nos. 50 373 and 50-374
Reference:
(a)
M.A. Ring letter to Cordell Reed dated Jdy 29,1992, tiansmitt., inspection Recort 60 37319?.015 and Sib 374/92015 (b)
C.M. Allen letter to USNRC dated July 28,1987; transmitt:ng
~
Revision 0 of the IST program (c)
Paul C. Shemanski (NRC) Intter to Henry Bliss (CECO) dated August 16,1988; SER and Relief of the IST Program for ptonps and valves; Approved Rollef Request RP 04 (d)
W.E. Morgan letter to USNRC dated November 1988; Response to Questions from the SER; Enhanced Relief Request RP 04 LaSalle County Station presently performs pump inservice testing as specified in ASME Section XI, IWP-3100, incavice Test Procedure. The allowable ranges; as specified in Table IWP-3100-2, may require equipment to be declared
!nocerable while no actual pump deterioration has occurred. To address this concern, cot e relief is rec uested with respect to ASME Section XI, IWP-3100. The attached relief request, RA11, presents LaSallo's proposed alternative testing; the vibration monitoring program as referenced in the body of the relief request is discussed further in references (b), (c), and (d). This submittal fulfills our commitment as described in item 2.b.(1) of reference (a).
010107 9209030t59 920025 Y
PDR ADOCK 05000373 p
PDR ZNLD/2092/6
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2 Relief request RP 11 is applicable to both Units 1 and 2, and it is requested that the rollef extend throuch M remainder of the first 10 year Tecting Interval, which will be completed DecemLer 31,1993.
Please contact this office should further information be required.
i Respectfully, r
j L
J. Ann Shiel s Nuclear Licensing Administrator i
Attachinent: Relief Request RP 11 cc:
A. Bert Davis, Regional Administrator - Alli B.L. Siegel. Project Manager - NRR D.L. Hills, Senior Resident inspector - LaSalle Office of Nuclear Facility Safety IDNS M. Huber, Rlli t
ZNLD/2092/7
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LASALLE COUNTY STATION UNIT # 1 AND 2 PUMP RELIEF REQUEST RP-11 AEEEETED COMPQl!XtiT f s) :
+
E011P_QHEliT_Elli CLASS /CATIEQRY EUNGT1.Oli
~All Pumps in Various Various program d
ASJE SECT 19tLR._TESI_BI!1UJEEliERIEi IWP-3100, Inservice Test Procedure BASIS FOR RELIEP:
.The ASME Code requires that the pump test parameters of differential pressure and flow rate be measured and compared with the limits given in Table IWP-3100-2.
LaSaile Station has found these limits to-ha restrictive and.can require 1
pumps tc be declared inoperable due to. entry into the Action range when in fact no deterioration of pump function has occurred.
IWP-3210 states that "If these ranges can not be met,.the Owner shall specify in the' record of testo...the reduced range limits to allow the pump to fulfill its function, and those limits shall be used in lieu of-- the ranges given in 'Iable IWP-3100-2. "
Since the purpose of pump testing is to detect deterioration of pump function, establishing higher upper limits for pump ter* quantities to account-for extraneous conditions will have na 9ffect on the i
ability to detect changes in the pump's hydraulic puformance.
The American National Standard for Inservice Testing 'of pumps (ANSI /ASME'OM-6-1987, Draft 11, Rev. 0) reflects this position.
Coupled with the=above, is the use of a more extensive vibration monitoring - prcgram than 1 ASME Section XI requires.
The -LaSalle vibration program meets all..of the requirements delineated-in ANSI /ASME OM-6-1986,-Draft 8.
Vibration analysis is a reliable performance. Indicator of pump mechanical condition and provides positive identification of degrading conditions.
LaSa11e's vibration monitoring program is described in relief request RP-04.
ALTERNATIVE TESJ'i
=The evaluation of applicable pump test quantities will be per the following table:
ALLOWABLE RANGES OF PUMP TEST PARAMETERS (1)
' TEST PARAMETER ACCEPT RANGE ALERT RANGE RIOUIRED.ACTIQH-LQH EGli LM liLGJ LQM RLGli P (Positive 93 to 1.10Pc
.9 to <,.93P
<.9P
>1.1P c
c c
L
' Displace Pumps)
L i.
i l :..!'
j m.,
_.- _ _ _. - = _. = _ -. _. _ _ _ _. _. _
A j
.c i
4P'(Vertical 95 to 1.14P,.
93 to <.95hP --
< 93hP,.
>1. lop c
y Lino Shaft Pump)
'(2Q-(Pos. Disp.
95 to 1.16Qc
.93 to <.95b(',
< 9.16Qc >3.10Q,.
and Vert. Lino Pumps) e LP (Centrifugal 90 to 1.14Pc,
< 904Pc >1.14P i
c Pumps) t 6Q.-~(Contrifugal 90 to 1.16Q 3
< 90AQc >1.1hQ g
c Pumpo)
NOTE: The nubscript "r" denotes reference valuo.
t
= (1) See Arnorican National-Standard for Inservico Tooting of Pun.ps -
ANSI /ASME OM-6-1987, Draft 11, Rev.
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